In this example I am creating a grid that contains as many 200 pixel column tracks as will fit into the container with the remaining space shared equally between the columns. In the
minmax() function the first value is the minimum size I want my tracks to be, the second is the maximum. By using
1fr as the maximum value the space is equally distributed.
See the Pen Grid by Example 28: minmax() in auto-fill repeating tracks by rachelandrew (@rachelandrew) on CodePen.